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H. W. WELLES.

WATCH REGULATOR.

(No Model.)

110.391.101. Patented Oct. 16, 1888.

Inventor: I

Witnesses N PETERS. Phalc-Uihugnphgr. ymmn mn n.0,

UNITED STATES PATENT OEEIcE.

HO\VARD W. WELLES, OF POUGHKEEPSIE, NEW YORK.

WATCH-REGU LATOR.

SPECIFICATION forming part of Letters Patent. No. 391,101, dated October16, 1888.

Application filed September 28, 1887. Serial No. 250,017. (No model.)

To all whom it may concern:

Be it known that I, HOWARD W. WELLEs, a citizen of the United States,residing at Boughkcepsie, in the county of Dutchess and State of NewYork, have invented certain new and use ful Improvements inRegisteririg-Regulators and Timeltegisters for Time-Pieces; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates toimprovementsin registering-regulators andtimeregis'ters for ti mepieces in which there are independently-movableconcentric disksin combination with each other; and the object of myinvention or improvements is to providea new and more effectual meansfor indicating just how far toward fast or slow the regulator of atime-piece was changed at its last setting, thus enabling any jeweler toplace the zero -points of the two disks together at the time ofregulating a watch, and so to gage accurately the distance of the newmovement of the regulator with out the need of any memorandum to refreshhis memory at the time of the next variation of the regulator. I attainthis object by the device illustrated in the accompanying drawings, inwhich Figure 1 is a plan view of my device as it appears in the interiorof a watch. Fig. 2 is an enlarged sectional view of the concentricdisks, showing the manner in which they are superimposed in relation toone another.

Similar letters refer to similar parts in both views.

In the drawings, A represents the cock; B, the lower and larger disk,which may be graduated as desired; G, the upper smaller disk; D, thepiuionattached to O and cogged. E is the rack of the regulator to beoperated by the cogged pinion D. Any other desired method of contact maybe used by moving the regulator.

J rep resents the graduated minute or second time-scale which is old inthis connection, and K the doubleiudex-hand with both the minute andsecond end.

The disk B works on A independently of disk Qandfriction tight,so thatit can bereadily set at any point, and the zero-mark on it made tocorrespond with a line or zero-mark on the concentric disk 0.

Suppose the watch is found to have gained six and a half minutes sincethe last setting.

Set the index-hand K, as shown in the drawings, Fig. 1, six and one-halfpoints toward F. Then move the lower disk, B, until its zeromarkcorresponds with the middle point be tween F and S on the concentricdisk 0. (This central point is approximately shown in Fig. 1.) Then movethe latter disk 0 away from the zero-mark of B toward S, or the slowside, as far as may be thought necessary to correct the error noted inthe last twenty-four hours. At the end of the next twenty-four hours thejeweler or wearer of the watch has the whole record before him, and willknow almost exactly how much to move the regulator to correct theremaining error. Each subsequent time the regulator is to be moved thedisk B should first have its zero-point broughtin line with that of disk0 to show the next variation of the regulator.

It will be seen that this registering device may be applied to clocks aswell as watches by attaching it to one or both sides ofthepend ulum; nordo I limit myself to two full disks, for I have sometimes used simpleindex-hands in place of disks, like B, concentric with O andworking,like B, friction tight, as a pointer with which to compare themovement of the regu lating-disk G. If the variation is only of seeonds, the end of the index K (marked 8) is to be used.

If it be desired, an additional index-hand may be employed to work on asecond scale marked for days, to show the number of days between theseveral examinations of the watch where they are not made regularly.

What I claim, therefore, and desire to secure by Letters Patent, is

In a time-piece, a graduated movable disk, B, made concentric withanother movable disk or pointer, C, the latter being connected with theregulator-lever, as by pinion and rack, or other convenient method, eachof the disks being independent in movement, substantially as and for thepurposes described.

In testimony whereof I affix my signature in presence of two witnesses.

HOW'ARD "W. YVELLES.

itnesses:

EDWARD S. A'IWVATER, IRVING ELTING.

